CMH-RPC | Precision Chilled Mirror Dewpoint Hygrometer
Featuring 3-stage chilled mirror technology and integral cooling, the CMH-RPC delivers precise and continuous moisture measurements up to -95 °C frost/dew point, translating to 37 ppb(V), making it an indispensable tool for high-accuracy applications.
The CMH-RPC offers unmatched accuracy for critical applications in laboratories and research facilities and as a reference standard for calibrating other moisture measurement instruments, delivered ready for immediate bench-top installation.
Our Model CMH Chilled Mirror Hygrometer accurately measures the dewpoint of a gas by cooling a mirrored surface, over which the gas flows until a layer of dew forms on the surface.
Other Products and Services from Alpha Moisture Systems
SS-1 & SS-2 Sample Systems
Precision-engineered sample systems for continuous trace moisture measurement of process gas and dry compressed air, designed specifically for low-pressure systems.
The SS-1 operates with the sensor at atmospheric pressure, while the SS-2 operates at system pressure, both accommodating a maximum inlet pressure of 50 barg (725 psi). They include comprehensive pressure and flow control, sample filtration to remove particulates, an auxiliary inlet for a second sample or calibration gas, and an outlet for sample recovery or disposal.
Manufactured for durability and reliability, these systems offer a compact, easy-to-install design that comes fully assembled. Their modular build is ideal for panel, surface, or weatherproof mounting, and features high-quality stainless steel pipework and fittings, with all major components clearly labelled and a flow schematic displayed on the aluminium front panel.
Sensor Holder / Sample Cell
Our Sensor Holder/Sample Cell is designed to optimise sampling conditions for all dewpoint transmitter installations and is available with a variety of inlet/outlet fittings to suit specific use cases or requirements.
Constructed from durable 316 stainless steel, the Sensor Holder/Sample Cell is engineered to pass the sample gas through the unit without risk of contamination. Its design incorporates high-quality stainless steel compression fittings, ensuring a secure and leak-proof connection for reliable sampling.
This essential accessory ensures that your system operates at peak efficiency, facilitating easy transmitter removal for annual calibration without compromising system integrity.
DS1500 Display
A sophisticated, panel mount, single-channel display, designed to enhance continuous trace moisture measurement in various gases and dry compressed air systems — when used with a compatible dewpoint transmitter.
The DS1500 incorporates RS485 and MODBUS (RTU) capabilities to facilitate remote interrogation and comprehensive communication with the AMT, AMT-Ex and PDT dewpoint transmitters, for continuous trace moisture measurement across a range of applications.
Factory configured to user specifications, the DS1500 can display measurements in °C dewpoint, °F dewpoint, ppm(V), ppb(V), g/m³, or lb/MMSCF on a large, six-digit, red LED display, providing clear and immediate data readouts. It offers Process Variable (PV) retransmission in 0-20 or 4-20 mA and is user-configurable to input pressure for pressure dewpoint conversion — offering a solution that is as versatile as it is reliable.
Alpha Moisture Systems
Network House, 5 Lister Hill, Leeds, West Yorkshire, LS18 5AZ, United Kingdom
Alpha Moisture Systems has led trace moisture measurement for over 30 years, offering precision solutions like dewpoint hygrometers, transmitters, and sample systems. We deliver world-class products, bespoke engineering, and expert support. Contact us to discuss your needs.